MTD 31AE5MLG729 Service Manual Download Page 3 | Manualshive

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TABLE OF CONTENTS

General Information ....................................................................................................1
Tire Pressure  .............................................................................................................2
Chute Installation ........................................................................................................2
Skid Shoe and Shave Plate Adjustment .................................................................... 2
Shave Plate Adjustment  ............................................................................................. 3
Drive Control Cable Adjustment ................................................................................. 3
Auger Control Testing and Adjustment ...................................................................... 4
Shift Rod Adjustment .................................................................................................5
Auger Belt Replacement  ............................................................................................ 5
Drive Belt Replacement ............................................................................................. 6
Friction Wheel Removal  ............................................................................................. 6
Planetary Gear Removal  ............................................................................................ 8
Drive Shaft Removal  .................................................................................................. 9
Axlw Shaft Removal  .................................................................................................10
Splitting the Unit  .......................................................................................................11
FRiction Wheel Disc Disassembly ............................................................................13
Auger Pulley Removal ..............................................................................................14
Auger and Impeller Removal ....................................................................................14
Auger and Impeller Notes .........................................................................................15
Reducer Transmission  .............................................................................................16
Reduction Transmission Disassembly .....................................................................16
Auger Idler Arm  ........................................................................................................16

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Summary of Contents for 31AE5MLG729

Page 1: ...s of the product s Operators Manual supplied with the equipment No liability can be accepted for any inaccuracies or omission in this publication although care has been taken to make it as complete and accurate as possible at the time of publication However due to the variety of outdoor power equipment and continuing product changes that occur over time updates will be made to these instructions f...

Page 2: ......

Page 3: ... Adjustment 4 Shift Rod Adjustment 5 Auger Belt Replacement 5 Drive Belt Replacement 6 Friction Wheel Removal 6 Planetary Gear Removal 8 Drive Shaft Removal 9 Axlw Shaft Removal 10 Splitting the Unit 11 FRiction Wheel Disc Disassembly 13 Auger Pulley Removal 14 Auger and Impeller Removal 14 Auger and Impeller Notes 15 Reducer Transmission 16 Reduction Transmission Disassembly 16 Auger Idler Arm 16...

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Page 5: ...the first time use caution when lifting the handle The shift lever rod can get caught on the lower handle cross member and if forced into position can bend the spring shift lever If necessary move the shift rod in front of the cross member as you raise the handle into position There are two Supplement Sheets dated July 19 2004 and July 20 2004 Subject Connector Sleeve on Two Stage Snow Thrower shi...

Page 6: ...ce use the palm of your hand to apply swift firm pressure to the back of each 2 3 Pull the hairpin clip out of the clevis pin on the chute support rod Save the hardware 2 4 Insert the round end of the chute control box on the short tube of the chute assembly See Figure 4 2 5 Insert the other end of the chute control box into the chute support tube 2 6 Insert the clevis pin removed earlier through ...

Page 7: ... removing the shave plate Figure 6 Hex Nuts Skid Shoe 4 1 Remove the carriage bolts and hex nuts which attach it to the snow thrower housing See Fig ure 7 4 2 Install a new shave plate making sure the heads of the carriage bolts are to the inside of housing 4 3 Tighten nuts securely 5 DRIVE CONTROL CABLE ADJUSTMENT When the drive control is released and in the disen gaged or up position the cable ...

Page 8: ... shut off the engine Wait for ALL moving parts to stop before re adjusting the auger control 6 4 To readjust the control cable loosen the hex jam nut on the auger control cable Z fitting Rotate the coupling end of the cable counterclockwise to provide more slack Retighten the hex jam nut See Figure 9 6 5 Repeat Auger Control Test to verify proper adjustment has been achieved WARNING Never attempt ...

Page 9: ... ferrule with the hairpin clip removed earlier Figure 11 Ferrule Hairpin Clip Figure 12 Shift Arm 8 AUGER BELT REPLACEMENT 8 1 Using a 3 8 socket and extension remove the two self tapping screws securing the plastic belt cover to the frame See Figure 13 8 2 Roll the auger belt off the engine pulley See Fig ure 14 NOTE Place a scewdriver under the belt as you pull slowly on the starter cord to wind...

Page 10: ... the frame after installing a replacement auger belt 9 DRIVE BELT REPLACEMENT To remove and replace your snow thrower s drive belt proceed as follows 9 1 Follow steps 8 1 through 8 6 in the AUGER BELT REMOVAL Section Then continue with the following steps 9 2 Use a length of starter cord to pull the drive belt idler pulley toward the right away from the belt See Figure 17 9 3 Wedge a piece of wood...

Page 11: ... under the gas cap 10 4 Disconnect the spark plug wire from the spark plug 10 5 Carefully pivot the snow thrower up and forward so that it rests on the auger housing 10 6 Using a 3 8 socket remove the four self tapping screws that secure the frame cover to the frame See Figure 19 Figure 19 Self Tapping Screws 10 7 Using a socket remove the screws and bell washers securing the wheels to the axles R...

Page 12: ...omponents If you re disassembling the friction wheel and replacing only the rubber ring proceed as follows 10 13 Remove the four screws that secure the friction wheel s side plates together See Figure 24 10 14 Remove the rubber ring from between the plates 10 15 Reassemble the side plates with a replacement rubber ring IMPORTANT Tighten each screw only one rota tion before turning the wheel clockw...

Page 13: ...etary ring gear See Figure 27 11 7 You can now remove and service the inner plan etary gears NOTE The procedure can be performed for either planetary gear cluster 12 DRIVE SHAFT REMOVAL NOTE It is not necessary to remove any belts to service the Drive shaft 12 1 Remove both planetary gear clusters as covered in REMOVAL OF THE PLANETARY GEAR sec tion 12 2 Lift up on the right side of the drive shaf...

Page 14: ...ble is routed on the inside of the drive shaft 13 AXLE SHAFT REMOVAL NOTE It is not necessary to remove the drive shaft in order to service the wheel axle 13 1 Tip the unit up on the auger housing 13 2 Remove both wheels 13 3 Remove the frame cover 13 4 Remove the spacers on each end of the axle See Figure 31 13 5 Remove both cotter pins from the clevis pins securing the sprockets to the wheel axl...

Page 15: ...ve frame sides leaving the axles flush with each gear Slide the axle sup port tube between the gears and slide the axles together Line up the gears with the holes in the axle and replace the clevis pins and cotter pins See Figure 35 14 SPLITTING THE UNIT Splitting the unit in two allows easy access to the fric tion disk and auger pulley This is the preferred method of servicing these parts 14 1 Dr...

Page 16: ... to the frame See Figure 37 14 8 Using a socket remove the TT screw handle tab and washer securing the support tube to the frame Remove the support tube from the unit See Figure 38 14 9 Using a 3 8 socket remove the AB screw securing the auger cable guide bracket to the frame See Figure 39 14 10 Using a socket remove the 4 bolts 2 on each side securing the auger housing assembly to the wheel drive...

Page 17: ...ion 15 3 Using a piece of starter cord pull the drive clutch idler bracket away from the belt and block it with a piece of wood See Figure 41 Figure 40 Figure 41 15 4 Using the engine pull start handle and a small cotter pin removal tool roll the drive belt off the engine pulley See Figure 42 15 5 Using a 9 16 socket and screwdriver remove the Jam nut and bell washer securing the friction wheel di...

Page 18: ...he impeller assembly 16 4 Inspect the pulley and adapter for any wear or damage NOTE During reassembly use Loctite 242 on the screw NOTE Torque to 160 200 inch pounds 17 AUGER AND IMPELLER REMOVAL 17 1 Remove the Auger Pulley as covered in the AUGER PULLEY REMOVAL Section 17 2 Using a socket remove the two flange lock nuts securing the bearing housing to the auger housing Remove the bearing housin...

Page 19: ... shaft is machined to match a double D machining in the impeller See Figure 49 Hex flange bearings are used at the ends of the auger axle There a four shear pins used to attach the spiral assemblies to the auger axle Spare pins are shipped with the unit Spiral assemblies are marked left and right for proper installation See Figure 50 NOTE During assembly place the auger hous ing face up when insta...

Page 20: ...securing the reducer halves together See Fig ure 52 19 2 Separate the housing halves using a putty knife See Figure 53 19 3 Inspect all internal parts for wear or damage NOTE before assembly clean off all of the ultra gray sealant on both sides of the gearbox hous ing Use ultra gray to reseal the housing before assembly 20 AUGER IDLER ARM 20 1 Split the unit Refer to the SPLIT THE UNIT Sec tion 20...

Page 21: ...6 socket on a long extension and a 15 16 socket on a socket wrench remove the nut and shoulder screw attaching the idler to the auger housing See Figure 55 20 5 Inspect the idler pulley for wear or damage NOTE The idler pulley can be removed using a 9 16 socket and a 9 16 opened end wrench Figure 54 Alignment Hole Figure 55 Idler Arm ...

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